Serving tray



FIG. 1 is a perspective view of a serving tray;

FIG. 2 is a right side elevational view of the serving tray;

FIG. 3 is a left side elevational view of the serving tray;

FIG. 4 is a front elevational view of the serving tray;

FIG. 5 is a rear elevational view of the serving tray;

FIG. 6 is a top plan view of the serving tray; and,

FIG. 7 is a bottom plan view of the serving tray. 

CLAIM The ornamental design for a serving tray, as shown and described. 